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BOSTON MARATHON 2023

Derek Demass

Bib: 6629•M

NY

0:00
0:00
/ mi
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Overall
#0 / 26622
Top 21%
Gender (Male)
#0 / 15176
Top 34%
Division (M18-39)
#0 / 5285
Race Day Weather
49°/39°F
light intensity drizzle

⏱️ Race Timeline

Start
0:00:00
Race begins
5K· 3.11 mi
22:05
Rank: #6910
Start → 5K
22:05 | 7:06/mi
10K· 6.21 mi
43:58
Rank: #6948 (-38)
5K → 10K
21:53 | 7:03/mi
15K· 9.32 mi
1:05:56
Rank: #6934 (+14)
10K → 15K
21:58 | 7:04/mi
20K· 12.43 mi
1:27:55
Rank: #6775 (+159)
15K → 20K
21:59 | 7:05/mi
Half· 13.11 mi
1:32:43
Rank: #6779 (-4)
20K → Half
4:48 | 7:02/mi
25K· 15.53 mi
1:49:53
Rank: #6632 (+147)
Half → 25K
17:10 | 7:05/mi
30K· 18.64 mi
2:12:26
Rank: #6431 (+201)
25K → 30K
22:33 | 7:15/mi
20M
2:22:15
Rank: #6303 (+128)
30K → 20M
9:49 | 7:13/mi
21M
2:29:56
Rank: #6223 (+80)
20M → 21M
7:41 | 7:41/mi
35K· 21.75 mi
2:35:13
Rank: #6187 (+36)
21M → 35K
5:17 | 7:04/mi
23M
2:44:18
Rank: #6062 (+125)
35K → 23M
9:05 | 7:15/mi
24M
2:51:22
Rank: #5968 (+94)
23M → 24M
7:04 | 7:04/mi
40K· 24.85 mi
2:57:40
Rank: #5922 (+46)
24M → 40K
6:18 | 7:22/mi
25.2M
3:00:20
Rank: #5889 (+33)
40K → 25.2M
2:40 | 7:44/mi
Finish· 26.22 mi
3:07:00
Rank: #5700 (+189)
25.2M → Finish
6:40 | 6:33/mi

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:32:43
Pace7:04 /mi
2nd Half
Distance13.11 mi
Time1:34:17
Pace7:12 /mi
📊Positive Split: 1.7% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi10:26:0722:057:0622:05
7:06
-
10K
6.21 mi10:48:0043:587:0521:53
7:03
-0:03
15K
9.32 mi11:09:581:05:567:0421:58
7:04
+0:01
20K
12.43 mi11:31:571:27:557:0421:59
7:05
+0:01
Half
13.11 mi11:36:451:32:437:044:48
7:02
-0:03
25K
15.53 mi11:53:551:49:537:0417:10
7:05
+0:03
30K
18.64 mi12:16:282:12:267:0622:33
7:15
+0:10
20M
20.00 mi12:26:172:22:157:079:49
7:13
-0:02
21M
21.00 mi12:33:582:29:567:087:41
7:41
+0:28
35K
21.75 mi12:39:152:35:137:085:17
7:04
-0:37
23M
23.00 mi12:48:202:44:187:099:05
7:15
+0:11
24M
24.00 mi12:55:242:51:227:087:04
7:04
-0:11
40K
24.85 mi13:01:422:57:407:096:18
7:22
+0:18
25.2M
25.20 mi13:04:223:00:207:092:40
7:44
+0:22
Finish
26.22 mi13:11:023:07:007:086:40
6:33
-1:11

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

6:33 /mi

Average Pace

7:08 /mi

Slowest Pace

7:44 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:08:54

69% of race

Time at Steady Pace

55:26

30% of race

Time at Slower Pace

2:40

1% of race

Average Pace: 7:08 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi10:26:0722:057:0622:05
7:06
#6910
10K
6.21 mi10:48:0043:587:0521:53
7:03
#6948
15K
9.32 mi11:09:581:05:567:0421:58
7:04
#6934
20K
12.43 mi11:31:571:27:557:0421:59
7:05
#6775
Half
13.11 mi11:36:451:32:437:044:48
7:02
#6779
25K
15.53 mi11:53:551:49:537:0417:10
7:05
#6632
30K
18.64 mi12:16:282:12:267:0622:33
7:15
#6431
20M
20.00 mi12:26:172:22:157:079:49
7:13
#6303
21M
21.00 mi12:33:582:29:567:087:41
7:41
#6223
35K
21.75 mi12:39:152:35:137:085:17
7:04
#6187
23M
23.00 mi12:48:202:44:187:099:05
7:15
#6062
24M
24.00 mi12:55:242:51:227:087:04
7:04
#5968
40K
24.85 mi13:01:422:57:407:096:18
7:22
#5922
25.2M
25.20 mi13:04:223:00:207:092:40
7:44
#5889
Finish
26.22 mi13:11:023:07:007:086:40
6:33
#5700
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM18-39Seg. OverallSeg. MalesSeg. M18-39
5K3.11 mi3.11 mi6910620062006958(Top 26%)6214(Top 41%)6214(Top 118%)
10K6.21 mi3.10 mi6948-386223-236223-237082(Top 27%)6296(Top 41%)6296(Top 119%)
15K9.32 mi3.11 mi6934+146206+176206+176958(Top 26%)6214(Top 41%)6214(Top 118%)
20K12.43 mi3.11 mi6775+1596079+1276079+1276413(Top 24%)5777(Top 38%)5777(Top 109%)
Half13.11 mi0.68 mi6779-46081-26081-26692(Top 25%)5999(Top 40%)5999(Top 114%)
25K15.53 mi2.42 mi6632+1475955+1265955+1266011(Top 23%)5450(Top 36%)5450(Top 103%)
30K18.64 mi3.11 mi6431+2015794+1615794+1615808(Top 22%)5229(Top 34%)5229(Top 99%)
20M20.00 mi1.36 mi6303+1285681+1135681+1135238(Top 20%)4730(Top 31%)4730(Top 89%)
21M21.00 mi1.00 mi6223+805607+745607+745515(Top 21%)4841(Top 32%)4841(Top 92%)
35K21.75 mi0.75 mi6187+365578+295578+295672(Top 21%)5003(Top 33%)5003(Top 95%)
23M23.00 mi1.25 mi6062+1255469+1095469+1095072(Top 19%)4521(Top 30%)4521(Top 86%)
24M24.00 mi1.00 mi5968+945383+865383+865013(Top 19%)4431(Top 29%)4431(Top 84%)
40K24.85 mi0.85 mi5922+465334+495334+495862(Top 22%)4928(Top 32%)4928(Top 93%)
25.2M25.20 mi0.35 mi5889+335308+265308+265013(Top 19%)4290(Top 28%)4290(Top 81%)
Finish26.22 mi1.02 mi5700+1895151+1575151+1572699(Top 10%)2471(Top 16%)2471(Top 47%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 26%
×21stories
+97ft-345ft

Overall

6958

Males

6214

M18-39

6214

5K→10K

3.1 - 6.2 mi

Top 27%
×5stories
+79ft-138ft

Overall

7082

Males

6296

M18-39

6296

10K→15K

6.2 - 9.3 mi

Top 26%
×3stories
+67ft-78ft

Overall

6958

Males

6214

M18-39

6214

15K→20K

9.3 - 12.4 mi

Top 24%
×5stories
+106ft-86ft

Overall

6413

Males

5777

M18-39

5777

20K→Half

12.4 - 13.1 mi

Top 25%
×2stories
+19ft-37ft

Overall

6692

Males

5999

M18-39

5999

Half→25K

13.1 - 15.5 mi

Top 23%
×4stories
+66ft-88ft

Overall

6011

Males

5450

M18-39

5450

25K→30K

15.5 - 18.6 mi

Top 22%
×9stories
+181ft-148ft

Overall

5808

Males

5229

M18-39

5229

30K→20M

18.6 - 20.0 mi

Top 20%
×5stories
+64ft-50ft

Overall

5238

Males

4730

M18-39

4730

20M→21M

20.0 - 21.0 mi

Top 21%
×8stories
+106ft-24ft

Overall

5515

Males

4841

M18-39

4841

21M→35K

21.0 - 21.8 mi

Top 21%
×7stories
+17ft-86ft

Overall

5672

Males

5003

M18-39

5003

35K→23M

21.8 - 23.0 mi

Top 19%
×5stories
+23ft-63ft

Overall

5072

Males

4521

M18-39

4521

23M→24M

23.0 - 24.0 mi

Top 19%
×6stories
+12ft-82ft

Overall

5013

Males

4431

M18-39

4431

24M→40K

24.0 - 24.9 mi

Top 22%
×1story
+6ft-20ft

Overall

5862

Males

4928

M18-39

4928

40K→25.2M

24.9 - 25.2 mi

Top 19%
×1story
+13ft-16ft

Overall

5013

Males

4290

M18-39

4290

25.2M→Finish

25.2 - 26.2 mi

Top 10%
×2stories
+22ft-21ft

Overall

2699

Males

2471

M18-39

2471

Passing Analysis

Category:
Athletes Passed
1746
Passed By
536
Net Change
+1210
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#6910
5K → 10K184222-38#6910#6948
10K → 15K137123+14#6948#6934
15K → 20K18829+159#6934#6775
20K → Half1822-4#6775#6779
Half → 25K16518+147#6779#6632
25K → 30K22524+201#6632#6431
30K → 20M1357+128#6431#6303
20M → 21M10222+80#6303#6223
21M → 35K5216+36#6223#6187
35K → 23M1327+125#6187#6062
23M → 24M10511+94#6062#5968
24M → 40K7327+46#5968#5922
40K → 25.2M396+33#5922#5889
25.2M → Finish1912+189#5889#5700
TOTALS1746536+1210
📊

Passing Visuals

Category:

📈Position Graph

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🎨Heatmap Timeline

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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing